<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="utf-8" />
    <title>标题标签</title>
</head>

<body>
    <h1>我是标题</h1>
    <h2>我是标题</h2>
    <h3>我是标题</h3>
    <h4>我是标题</h4>
    <h5>我是标题</h5>
    <h6>我是标题</h6>

</body>

</html>